I am trying to integrate an equation that has a cos(x), sin(x), cosh(x), sinh(x).  When I enter the equation in Maple and try to integrate the equation Maple just rewrites the equation without actually solving the equation.  I am not sure if I have to load a specific package to complete the integration.  Here is the equation:

H:= (cos(n*L)=cosh(n*L))/(sin(n*L)-sinh(n*L))

phi:=sin(n*x)-sinh(n*x)+H*(cos(n*x)-cosh(n*x)) 

when I write: int(phi(x), x=0..L)

How could I prove by Maple (11) that the following matrices are unitarily equivalent?

first row           cos(theta)    -sin(theta)

second row      sin(theta)      cos(theta)

and

first row       exp(i*theta)       0

second row         0           exp(-i*theta)

Hello Im trying to implement a method for numerical simulating a DE with Euler's method. I have got a second degree differential equations which i then transform to two first degrees which i give to my method. The code is given below. The method I'am using uses a list for which I ad an element after each step. This requires shifting al elements in the list one index lift or right. This works fine when there aren't many steps to do, but becomes very slow and uses a gigantic amount RAM in worksheet when i do 10.000 steps. Is there a way do to this more efficiently both in terms of speed and RAM ? Thanks Pieter

Hello!

sorry for my bad english...

I have a function, that depends og w^1. i do a lot of things with this function. in every following expr. i want to supress terms in w^n n > 2. can i do this?

 

thanks!

 

br

r

 

Hi all,

I am helping my friend on this issue.

We have some numerical computation which involves a lot of "log(g)*g" and we have to evaluate these for g on the interval [0, 1]. The reason that 0 is included is that because the singularity at 0 is removable.

 

In Maple:

Hi everybody,

I'm trying to solve  exact ODEs with first order and complex coeff.

I solve the system by seperate the real part and the im.part and then solved it numeric. no problems with that.

I would like to compare the exact solutions with the numerical one and use the solutions in formula tha in double integral.

My question how can i get exact solutions by maple( i tried but maple give me message that  can't alloc memory).

I tried entering x² and got (1/2)·x²

not (1/2)·x² + Constant

hi. anyone know how can i merge a lot of function in a piece wise comment? and plot merged one. for example in x axis for each 1 cm of length, we have one function till 10 cm and i want to plot all of these functions in one combined diagram.

I have a for loop that is solving an equation 25 times, and I need to now plot the 25 solution on the same graph. How do I do that?

I have the equation: 4Unit(m)=3Unit(m)+p/(1000Unit(kg/m^3)*9.86Unit(m*s^-2)) I would like p to give med a result in Unit(bar). However, no matter which solve I use it gives me the answer: Error, (in Units:-Standard:-+) the units `m` and `m^2*s^2/kg` have incompatible dimensions I have tried every solve in the menu. if I make the equation myself I get: P=(4Unit(m)-3Unit(m))*(1000Unit(kg/m^3)*9.86Unit(m*s^-2)) And the answer: 9860Unit(Pa) Howcome maple 13 cannot do this for me?

Hi everyone,

I am having some trouble separting terms in a pretty gnarly PDE.  I have a fairly complicated 2+1 PDE with auxillary conditions that I am trying to solve with a formal separation of variables approach.  I have a PDE that looks like this:

Hello everybody,

I look for modeling an inverted pendulum in 2D. ( I would like to see the beam linking masses moving).

I have already calculated the equations of the motion. I know with MatLAB and Simulink a thing similar is possible but I would like to keep on using it Maple.

Is a such modeling is possible with Maple?

Many thanks,

Ternox

In this post I'll take a closer look at the ways in which Maple code can be thread unsafe. If you have not already seen my post on Thread Safety, consider reading that post first. As a brief review, a procedure is thread safe if it works correctly when run in parallel.

The most obvious way in which procedures can be thread unsafe is if they share data without synchronizing access (using a Mutex, for example). So how can two threads share data?

I uploaded to my file section a file called "Kill and Imprison Order""

Thanks to your help, this program works. I can specify an arbitrary order, such as [4,6,1,15] of players who kill or imprison other players. The program will then eliminate other players given player 4 gets to kill and imprison first, then player 6, and so on. However, I now need to test this in a for-loop over ALL permutations, or over a selected subset of the set of all permutations, of all the players.  Is that possible in Maple?

How do I delete files I have uploaded in my file section?